10. (18 pts) Sam is a representative who sells large appliances such as refrigerators, stoves, and so forth. Let x = num

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10 18 Pts Sam Is A Representative Who Sells Large Appliances Such As Refrigerators Stoves And So Forth Let X Num 1 (39.08 KiB) Viewed 38 times

10. (18 pts) Sam is a representative who sells large appliances such as refrigerators, stoves, and so forth. Let x = number of appliances Sam sells on a given day. Let f= frequency (number of days) with which he sells x appliances. For a random sample of 240 days, Sam had the following sales record. X f 0 9 X P(x) 1 72 2 1 63 3 41 2 Assume the sales record is representative of the population of all sales day. (a) Use the relative frequency to find P(x) for x = 0 to 7. 5 4 28 3 4 5 14 (d) Compute the probability that x is less than 3. 6 8 (b) Use a histogram to graph the probability distribution of part (a). (c) Compute the probability that x is between 2 and 5 (inclusive 2 and 5). (e) Compute the expected value of the x distribution. 6 (f) Compute the standard deviation of the x distribution. 75 7